Alternating current vs direct current interview questions

16.
Power companies supply ac, not dc, because:
A. it is easier to transmit ac
B. there is no longer a need for dc
C. dc is more dangerous
D. there are not enough batteries
Answer: Option A

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17.
If a waveform period is determined to be 10 microseconds in duration, what is the frequency of the signal?
A. 100 Hz
B. 1000 Hz
C. 10 kHz
D. 100 kHz
Answer: Option D

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18.
The phase difference between sine waves of different frequencies is:
A. equal to their frequency differences
B. the difference in their fixed time displacement
C. the same throughout time
D. constantly changing
Answer: Option B

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19.
If a sine wave signal is 100 mV peak-to-peak, how many volts would be measured by a voltmeter?
A. 14.14 mV
B. 35.4 mV
C. 63.7 mV
D. 70.7 mV
Answer: Option B

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20.
What term expresses the frequency of a rectangular wave?
A. Hz
B. period
C. PRF
D. PRT
Answer: Option C

Explanation:

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